There's some kind of exclusivity deal whereby you can only get it from the Japanese amazon site. Someone else may have a more detailed explanation.

If you think it not being released in USA and Europe justifies downloading a rom of it then it is very easy to do then you can just use it on a $10 flash card, depends which you like more, ethics or making music...

You really should support Sano in his projects by fairly buying his fantastic Korg M01 software - please don't pirate this exclusive bit of software or even encourage others to do - think about all the hard work Sano has put into bringing htis to market so we can use - then go and earn yourself a little money to buy the cartrifge